Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/libcurl/opts/CURLOPT_PROXY.3 @ 17:dd9cdb856310

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Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 .\" **************************************************************************
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2 .\" * _ _ ____ _
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3 .\" * Project ___| | | | _ \| |
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4 .\" * / __| | | | |_) | |
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5 .\" * | (__| |_| | _ <| |___
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6 .\" * \___|\___/|_| \_\_____|
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7 .\" *
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8 .\" * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 .\" *
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10 .\" * This software is licensed as described in the file COPYING, which
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11 .\" * you should have received as part of this distribution. The terms
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12 .\" * are also available at https://curl.haxx.se/docs/copyright.html.
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13 .\" *
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14 .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 .\" * copies of the Software, and permit persons to whom the Software is
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16 .\" * furnished to do so, under the terms of the COPYING file.
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17 .\" *
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18 .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 .\" * KIND, either express or implied.
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20 .\" *
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21 .\" **************************************************************************
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22 .\"
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23 .TH CURLOPT_PROXY 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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24 .SH NAME
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25 CURLOPT_PROXY \- set proxy to use
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26 .SH SYNOPSIS
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27 #include <curl/curl.h>
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29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY, char *proxy);
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30 .SH DESCRIPTION
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31 Set the \fIproxy\fP to use for the upcoming request. The parameter should be a
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32 char * to a zero terminated string holding the host name or dotted numerical
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33 IP address. A numerical IPv6 address must be written within [brackets].
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34
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35 To specify port number in this string, append :[port] to the end of the host
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36 name. The proxy's port number may optionally be specified with the separate
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37 option \fICURLOPT_PROXYPORT(3)\fP. If not specified, libcurl will default to
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38 using port 1080 for proxies.
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39
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40 The proxy string may be prefixed with [scheme]:// to specify which kind of
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41 proxy is used.
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42
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43 .RS
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44 .IP http://
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45 HTTP Proxy. Default when no scheme or proxy type is specified.
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46 .IP https://
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47 HTTPS Proxy. (Added in 7.52.0 for OpenSSL, GnuTLS and NSS)
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48 .IP socks4://
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49 SOCKS4 Proxy.
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50 .IP socks4a://
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51 SOCKS4a Proxy. Proxy resolves URL hostname.
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52 .IP socks5://
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53 SOCKS5 Proxy.
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54 .IP socks5h://
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55 SOCKS5 Proxy. Proxy resolves URL hostname.
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56 .RE
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57
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58 Without a scheme prefix, \fICURLOPT_PROXYTYPE(3)\fP can be used to specify
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59 which kind of proxy the string identifies.
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60
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61 When you tell the library to use an HTTP proxy, libcurl will transparently
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62 convert operations to HTTP even if you specify an FTP URL etc. This may have
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63 an impact on what other features of the library you can use, such as
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64 \fICURLOPT_QUOTE(3)\fP and similar FTP specifics that don't work unless you
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65 tunnel through the HTTP proxy. Such tunneling is activated with
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66 \fICURLOPT_HTTPPROXYTUNNEL(3)\fP.
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67
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68 Setting the proxy string to "" (an empty string) will explicitly disable the
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69 use of a proxy, even if there is an environment variable set for it.
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70
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71 A proxy host string can also include protocol scheme (http://) and embedded
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72 user + password.
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73
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74 The application does not have to keep the string around after setting this
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75 option.
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76 .SH "Environment variables"
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77 libcurl respects the proxy environment variables named \fBhttp_proxy\fP,
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78 \fBftp_proxy\fP, \fBsftp_proxy\fP etc. If set, libcurl will use the specified
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79 proxy for that URL scheme. So for a "FTP://" URL, the \fBftp_proxy\fP is
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80 considered. \fBall_proxy\fP is used if no protocol specific proxy was set.
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81
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82 If \fBno_proxy\fP (or \fBNO_PROXY\fP) is set, it is the exact equivalent of
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83 setting the \fICURLOPT_NOPROXY(3)\fP option.
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84
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85 The \fICURLOPT_PROXY(3)\fP and \fICURLOPT_NOPROXY(3)\fP options override
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86 environment variables.
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87 .SH DEFAULT
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88 Default is NULL, meaning no proxy is used.
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89
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90 When you set a host name to use, do not assume that there's any particular
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91 single port number used widely for proxies. Specify it!
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92 .SH PROTOCOLS
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93 All except file://. Note that some protocols don't do very well over proxy.
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94 .SH EXAMPLE
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95 .nf
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96 CURL *curl = curl_easy_init();
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97 if(curl) {
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98 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/file.txt");
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99 curl_easy_setopt(curl, CURLOPT_PROXY, "http://proxy:80");
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100 curl_easy_perform(curl);
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101 }
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102 .fi
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103 .SH AVAILABILITY
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104 Since 7.14.1 the proxy environment variable names can include the protocol
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105 scheme.
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106
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107 Since 7.21.7 the proxy string supports the socks protocols as "schemes".
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108
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109 Since 7.50.2, unsupported schemes in proxy strings cause libcurl to return
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110 error.
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111 .SH RETURN VALUE
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112 Returns CURLE_OK if proxies are supported, CURLE_UNKNOWN_OPTION if not, or
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113 CURLE_OUT_OF_MEMORY if there was insufficient heap space.
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114 .SH "SEE ALSO"
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115 .BR CURLOPT_PROXYPORT "(3), " CURLOPT_HTTPPROXYTUNNEL "(3), "
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116 .BR CURLOPT_PROXYTYPE "(3)"